F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/15
F02M 21/04 (2006.01) F02B 43/00 (2006.01) F02M 13/08 (2006.01) F02M 35/04 (2006.01)
Patent
CA 1176923
ABSTRACT OF THE DISCLOSURE The device for proportioning a gaseous fuel and air for combustion in an internal combustion engine includes a plate-like first member having a peripheral edge portion and a second member cooperating with the first member to define a mixing chamber having an outlet adapted to be connected in communication with the air intake of the engine carburetor. The second member also includes an annular portion having an arcuate first wall which is convex to and spaced from the peripheral edge portion of the first member to define an annular venturi having an inlet in communication with the atmosphere and an annular outlet in communication with the mixing chamber. A base member or second wall cooperates with the arcuate wall to form a substantially closed, annular plenum chamber into which a gaseous fuel, such as natural gas, is admitted when the engine is to be operated on the gaseous fuel. The gaseous fuel is induced into the mixing chamber through one or more openings in the arcuate wall at or in the vicinity of the throat of the annular venturi. The proportioning device preferably is arranged to fit inside the housing of an existing air cleaner.
404226
American Cyanamid Company
Outboard Marine Corporation
Smart & Biggar
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